code: def test_DecoratorFailureTest(self):
      @self.monitor
      def func(x):
          raise ValueError()
  
      with self.assertRaises(ValueError):
          func(1)
      self.assertTrue(
          MetricsTest.gauge.get_cell(
              metrics.MonitorBoolGauge._FAILURE_LABEL
          ).value()
      )
  
file_path: model-optimization/tensorflow_model_optimization/python/core/keras/metrics_test.py
imports: import mock
  import tensorflow
  from tensorflow.python.eager import monitoring
  from tensorflow_model_optimization.python.core.keras import metrics
label_desc: Use image node_id 3 for calling the MetricsTest obj's underlying member method code with example usage: obj.test_DecoratorFailureTest() without return types